Crane attachment



pri l5 1924. l,490,1l7

\ E. H. LlcHTl-:NBERG CRANE ATTACHMENT Filed May` le. 1925 FEL .Bg y' @INEM uuid @chanted ipr. l5, i924.,

ERICH IEX. LICHTENBERG, OF MILWAUKEE, WISCNSM, .LSSGNOR TG KEHENG- @Gld- PDTOF MILWAUKEE, WESCGNSIN, A SGREGRATON., f

CRANE TTCMEN @riginal application led June 6, i922, Serial No. 566,362. Dvidesand this application tiled may le,

1923. Serial No. (33am-S.

To all whom t may concern.'

Be it known that I, ERICH lrll.i LICHTEN- BERG, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Crane Attachments, of which the following is a specilication- This application is a division of my pending application Serial #566,362, filed June 6, 1922, and the subject of the invention is a peculiar mounting for a crane or derrick attachment for large machines of a. portable t pe.

yin its practical adaptation my invention comprises a crane consisting of a mast, a Vboom connected therewith` to swing laterally, suitable hoisting mechanism for a load adapted to be supported from the boom.

rlhis crane is designed to be used upon concrete paving machines, or similar large machines that are supported by wheels or endless traction devices so as to travel from place to place, and progress as certain work penformed thereby proceeds. Owing to the 4heavy loads designed to be handled by the crane or derrick attachment, my invention resides in the provision of a special mount-v ing or stepping of the mast of the crane upon the frame of a main traction member by which the machine with which the crane attachment is used, is mounted to travel. As the body frameof the large machine carrying the derrick attachment is usually adapted for tilting movement as when a three-point suspension principle of construction is employed, it will be apparent that with my crane attachment mounted or stepped'directly upon one of the traction members, by which I mean the supporting structure of said traction member, enables tlie weight ofthe crane and its load to be carried over and by the surface on which the main machine travels, without being transmitted thereto thru a supporting means upon the body frame of the main machine itself. A greater stability of the main machine and the crane are thus obtained by the invention.

In the accompanying drawing; p y Figure 1 is a side view showing a crane attachment embodying the invention.

Figure 2 is a front view of the truck and traction devices of the machine supporting the crane showing lmore fully how the latteri best in Fig. 2.

is stepped or mounted upon one of the multiplanes or endless traction members.

lt is not deemednecessary to describe in detail the machine in conjunction with which my improvements are employed. lt siiices to know that my'machine comprises a i'ranie or body 1 mounted'ontraction multiplanes 7, and directly supported upon bracket 8^ carried by one of the multiplanes 2.

The mast 5 is equipped with the boom 9 braced by a guy rod 10, and at the base of the mast 5 is a winding drum l1, the cable 12 of which winds about in opposite directions and leads 0H to some suitable power driving means which enables the mast 5 t be driven positively in either of op osite rotative movements, for swinging the oom 9 in corresponding directions to carryf'a batch box from an industrial car to the skip 4, and back again. 1 y

The machines of my invention, as generally depicted in Figure 1, are so large` hav` ing a capacity as large as thirty-two 'cubic feet,` that power mechanism is necessary for preferred operation of'inachines of such size.

It is not believed necessary for the purposes of this descriptioin'to' set forth in detail the hoisting mechanism and the batch box apparatus which are illustrated as used in conjunction with my crane attachment. While a special type of such mechanism-is employed, as illustrated, it will be understood that any conventional hoisting and batchj box apparatus might be employed within the purview of the present invention, because the latter involves primarily the mounting of the crane attachment itself rather than any specific hoisting or other apparatus that maybe -used in connection therewith.

It is notable from the foregoin that since the crane is practically suppor with any load thereon, directly by the multiplane or other tract-ion device, which may be used in connection therewith, and liability of over-balancing of the frame of the main machine in the use of my crane is entirely avoided. lf the condition of the surface over which the main maclune 1s traveling is rough, it will be seen that as the traction member 2 travels up and down the crane attachment moves in correspondence therewith, and to a certain extent independently of the main frame l, owing to the provision of the arm 6 pivoted to said frame l at the `a mast supported on said traction devices and an ofstandingboom connected with the mast, the crane and any load lifted thereby beingdirectly carried by the traction device.

2. In a machine of the class described, the

combination of a. portable support comprising a frame and va pair of multiplanes supportm said frame at opposite side portions thereof, a rocker bearlng intermediate an end of the frame and the multiplane supportingl means, and a crane mounted upon the lsupport and comprising a mast and a boom and a bracket carried by one of the multiplanes and supporting the said crane thereon so that the weight of the crane and its load are directly carried by the said multiplane, ythe"crane being located at the 'end o the support equipped with the rocker bearing connection with themultiplane traction means.

3. Incombinatioma main machine comprising a body construction, supporting traction devices for said main frame adaptedto have movement independently of the main frame, and a crane supported by one of said traction devices. v

4. in combination, a machine comprising a main body frame, traction devices' on which the weight. of the body frame is supported, and by which said machine is caused to travel for the performance of its work, and a crane connected with the body frame of the .machine and stepped upon one of the said traction devices so that its weight and that`of any load carried thereon will be primarily received upon said traction device and not upon the main body frame of the machine.

5. ln combination, a machine comprising a main body frame, traveling traction devices on which', the weightof the body frame is supported b which said machine is enabled `to trave for the` performance of its needn? p work and movable independently of their traveling motion relatively to the main frame, and a crane connected with the body frame of the machine and stepped upon one of the said traction devices so that its weight and that of any load carried thereon will be primarily received upon said traction device and not upon the main body frame of the machine', the connection between the crane and the body frame comprising .an arm attached to the crane and having a plvotal connection with the body frame to permit of said independent movement of the traction devices. ,n

6. In combination, a machine comprismg a main body frame, 'traction devices on which theweight of the body frame ,is supported, and by which said machine is caused to travel for the performance of its work, and a crane connected with the body frame of the machine and stepped upon one of the said traction devices so that its weight and that of any load carried thereon will be primarily received upon said traction device and not upon the main body Aframe of the machine, the connection between the crane and the body frame comprisingan arm attached to the crane and having a pivotal v connection with the body frame, the traction devices aforesaid having a single ypoint connection with the body frame at a point adjacent to the point of connection of the said arm with said frame.

7. A machine comprising a body frame, traction devices supporting the same and upon which the body frame is adapted to be moved whereby a portable. construction is obtained, a `connection between the body frame and said traction devices enabling movement of the traction devices independently of the movement of the body` frame, and a crane stepped upon one of the traction devices and having connection with the body frame aforesaid. y

8. A machine comprising a body frame, traction devices supporting the same' and upon which the body frame is adapted to be moved to establish a portable construction, a connection between the body frame and saidtraction devices enabling movement of the traction devices .independently of the movement of the body frame, and a crane stepped upon one of the traction devices and having connection with the body frame aforesaid, the connection between the traction devices and the body frame being a horizontal pivot between the sides of the body frame and the connection between the crane `and the body frame being a horizontal pivotal connection located substantially in the same vertical plane as the pivotal connection between the traction devices and the body frame.

9. ln combination, a main machine comprising a body frame, endless traction delos vices supporting said frame and by which a mast, a' boom, a connection between the the machine may be propelled, a single point upper portion of said mast and the frame pivotal connection between the ends of the of the machine, an arm pivoted to thebody body frame, an axle connecting the endless frame of said machine, ,and supported by 15 5 traction devices and to which the said single said bracketl on the traction frame, means point pivotal connection 'aforesaid is atwhereby the mast is stepped upon said arm,

tached, said traction devices comprising a and a pivotal connection between the said traction ,frame and an endless traction memarm and said body frame.

ber operating about said frame, a bracket In testimony whereof I affix my signature. l" attached to said traction frame, a crane attachment for the' main machine comprising ERICH H; LICHTENBERG. 

